Since this has 5 Volt preamp outputs you will get more power out of your external amplifiers due to the high voltage signal. This receiver utilizes 5V - preamp outputs. This has front, rear, and sub pre-amp outputs so you can amplify all your interior speakers, and add a subwoofer amplifier. Since this has 3 sets of pre-amps you can hook up multiple amplifiers. The pre-amp outputs allow you to hook up external amps for your speakers without needing to purchase additional accessories. This receiver makes your car audio system expandable. There is also a photo gallery you can view on the screen if you have photos stored on a USB or SD. You can customize the unit from a selection of background wallpaper patterns or pictures which you can upload through USB.
